Always get overwhelmed by the amount of material when covered at a comprehensive level. Attached is the study material of what to be prepared to cover at the conclusion of this course. I have worked through them but get stumped at several points. Can you provide a systematic approach to these problems and provide a reference to refer to make sure my solutions are accurate. It would helpful if you can explain why you did what you did, as this is just a helpful of study and questions may appear differently at the actual conclusion of the course.
The length of time to do a complete full service oil choice at Speedy-Lube, is normally distributed with a meanof 15.8 minutes and a standard deviationof 2.2 minutes. Refer to Table 5C on the Handout for MegaStat output.
Analyze the output above to determine what percentage of complete full service oil change will fall between 10 and 20 minutes?
What percentage of complete full service oil changes will take more than 20? If 1000 cars had a complete full service oil change how would you expect to be finished in more than 20 minutes?
The solution gives the calculation of probability based on normal distribution